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Finding the Fourth Proportional to 719,611.75, 993,151.70 and 417,805.75

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Solution

The fourth proportional to 719,611.75, 993,151.70 and 417,805.75 is: 576,622.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,611.75 : 993,151.70 = 417,805.75 : x
  2. Step 2: Convert to fraction form
    719,611.75/993,151.70 = 417,805.75/x
  3. Step 3: Cross multiply
    719,611.75x = 993,151.70 × 417,805.75
  4. Step 4: Simplify right side
    719,611.75x = 414,944,490,882.28
  5. Step 5: Solve for x
    x = 414,944,490,882.28/719,611.75
  6. Step 6: Final answer
    x = 576,622.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.